Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders
Abstract
In this study, a correlation between densification, microstructure, and electrical properties of BaTiO3 (BT) ceramics prepared from ultrasonically de-agglomerated BT powders has been analyzed. BT powders with the same crystal structure (tetragonal) and stoichiometry, but with different average particle size, were used to prepare sintered ceramics. Densification and electrical properties of the sintered BT ceramics were correlated to the average particle size of the powders. It was found that a decrease in average particle size improved the densification process as well as the ceramics' microstructure. The impedance measurements were done up to 320°C in order to separate grain (bulk) and grain boundary contributions. Bulk resistance was more or less the same, independent on the average particle size of the powder. On the contrary, grain boundary resistance increased with decreasing average particle size of the powder.
Keywords:
barium titanate / dielectric permittivity / grain boundary resistance / microstructure / sintering / shrinkageSource:
Materials and Manufacturing Processes, 2009, 24, 10-11, 1114-1123Publisher:
- Taylor & Francis
Funding / projects:
- Sinteza funkcionalnih materijala sa kontrolisanom strukturom na molekularnom i nano nivou (RS-142006)
DOI: 10.1080/10426910903031750
ISSN: 1042-6914; 1532-2475
WoS: 000274699700012
Scopus: 2-s2.0-77949552210
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Marković, Smilja AU - Miljković, Miroslav AU - Jovalekić, Čedomir AU - Mentus, Slavko AU - Uskoković, Dragan PY - 2009 UR - https://dais.sanu.ac.rs/123456789/178 AB - In this study, a correlation between densification, microstructure, and electrical properties of BaTiO3 (BT) ceramics prepared from ultrasonically de-agglomerated BT powders has been analyzed. BT powders with the same crystal structure (tetragonal) and stoichiometry, but with different average particle size, were used to prepare sintered ceramics. Densification and electrical properties of the sintered BT ceramics were correlated to the average particle size of the powders. It was found that a decrease in average particle size improved the densification process as well as the ceramics' microstructure. The impedance measurements were done up to 320°C in order to separate grain (bulk) and grain boundary contributions. Bulk resistance was more or less the same, independent on the average particle size of the powder. On the contrary, grain boundary resistance increased with decreasing average particle size of the powder. PB - Taylor & Francis T2 - Materials and Manufacturing Processes T1 - Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders SP - 1114 EP - 1123 VL - 24 IS - 10-11 DO - 10.1080/10426910903031750 UR - https://hdl.handle.net/21.15107/rcub_dais_178 ER -
@article{ author = "Marković, Smilja and Miljković, Miroslav and Jovalekić, Čedomir and Mentus, Slavko and Uskoković, Dragan", year = "2009", abstract = "In this study, a correlation between densification, microstructure, and electrical properties of BaTiO3 (BT) ceramics prepared from ultrasonically de-agglomerated BT powders has been analyzed. BT powders with the same crystal structure (tetragonal) and stoichiometry, but with different average particle size, were used to prepare sintered ceramics. Densification and electrical properties of the sintered BT ceramics were correlated to the average particle size of the powders. It was found that a decrease in average particle size improved the densification process as well as the ceramics' microstructure. The impedance measurements were done up to 320°C in order to separate grain (bulk) and grain boundary contributions. Bulk resistance was more or less the same, independent on the average particle size of the powder. On the contrary, grain boundary resistance increased with decreasing average particle size of the powder.", publisher = "Taylor & Francis", journal = "Materials and Manufacturing Processes", title = "Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders", pages = "1114-1123", volume = "24", number = "10-11", doi = "10.1080/10426910903031750", url = "https://hdl.handle.net/21.15107/rcub_dais_178" }
Marković, S., Miljković, M., Jovalekić, Č., Mentus, S.,& Uskoković, D.. (2009). Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders. in Materials and Manufacturing Processes Taylor & Francis., 24(10-11), 1114-1123. https://doi.org/10.1080/10426910903031750 https://hdl.handle.net/21.15107/rcub_dais_178
Marković S, Miljković M, Jovalekić Č, Mentus S, Uskoković D. Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders. in Materials and Manufacturing Processes. 2009;24(10-11):1114-1123. doi:10.1080/10426910903031750 https://hdl.handle.net/21.15107/rcub_dais_178 .
Marković, Smilja, Miljković, Miroslav, Jovalekić, Čedomir, Mentus, Slavko, Uskoković, Dragan, "Densification, Microstructure, and Electrical Properties of BaTiO3 (BT) Ceramics Prepared from Ultrasonically De-Agglomerated BT Powders" in Materials and Manufacturing Processes, 24, no. 10-11 (2009):1114-1123, https://doi.org/10.1080/10426910903031750 ., https://hdl.handle.net/21.15107/rcub_dais_178 .